Power Configuration Method and Apparatus

1. A power configuration method, comprising: determining, by a terminal device based on first information, to use a first port to perform uplink sending; when maximum transmit power supported by the first port is greater than calculated transmit power, performing, by the terminal device, uplink sending by using the first port, the calculated transmit power being indicated by a network device; and when the maximum transmit power of the first port is less than the calculated transmit power, dividing uplink sending between the first port and a second port of the terminal device by performing uplink sending through the first port by using the maximum transmit power supported by the first port, and performing a remaining portion of uplink sending through the second port of the terminal device by using first transmit power so that total transmit power of the terminal device is enabled to be the calculated transmit power, or the first transmit power is maximum transmit power supported by the second port, wherein the first information comprises at least one or more of the following: a signal-to-noise ratio (SNR), an uplink path loss, a received signal strength indicator (RSSI), reference signal received power (RSRP), received signal code power (RSCP), precoding and layer quantity information, and sounding reference signal (SRS) resource indicator information.

2. The method according to claim 1, wherein a plurality of ports of the terminal device are in a one-to-one correspondence with a plurality of antennas, and the plurality of ports comprise the first port and the second port.

3. The method according to claim 1, further comprising: when the first information comprises the SNR, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a largest SNR as the first port; or when the first information comprises the uplink path loss, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a smallest uplink path loss as the first port; or when the first information comprises the RSSI, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a largest RSSI as the first port; or when the first information comprises the RSRP, selecting, by the terminal device from the plurality of ports of the terminal device, a port with largest RSRP as the first port; or when the first information comprises the RSCP, selecting, by the terminal device from the plurality of ports of the terminal device, a port with largest RSCP as the first port.

4. The method according to claim 1, further comprising: when the first information comprises the SNR and the first port is not a port with a largest SNR in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a second largest SNR as the second port; or when the first information comprises the uplink path loss and the first port is not a port with a smallest uplink path loss in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a second smallest uplink path loss as the second port; or when the first information comprises the RSSI and the first port is not a port with a largest RSSI in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a second largest RSSI as the second port; or when the first information comprises the RSRP and the first port is not a port with largest RSRP in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with second largest RSRP as the second port; or when the first information comprises the RSCP and the first port is not a port with largest RSCP in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with second largest RSCP as the second port.

5. The method according to claim 1, further comprising: when determining, based on the first information, to use the first port and the second port to perform uplink sending, performing, by the terminal device, uplink sending through the first port by using third transmit power and performing uplink sending through the second port by using the third transmit power, the total transmit power of the terminal device being the calculated transmit power when uplink sending is performed through the first port and the second port by using the third transmit power; or performing uplink sending through the first port by using the maximum transmit power supported by the first port and performing uplink sending through the second port by using third transmit power; or performing uplink sending through the first port by using third transmit power and performing uplink sending through the second port by using the maximum transmit power supported by the second port; or performing uplink sending through the first port by using the maximum transmit power supported by the first port and performing uplink sending through the second port by using the maximum transmit power supported by the second port.

6. The method according to claim 1, the first transmit power being represented by min{Pmax,j, 10 log({circumflex over (P)}CH−{circumflex over (P)}max,i)}, where Pmax,j represents the maximum transmit power of the second port, {circumflex over (P)}CH represents a linear value of the calculated transmit power, the linear value of the calculated transmit power being determined based on the calculated transmit power, {circumflex over (P)}max,i represents a linear value of the maximum transmit power of the first port, the linear value of the maximum transmit power of the first port being determined based on the maximum transmit power of the first port.

7. The method according to claim 1, further comprising: determining, by the terminal device, that the first port and the second port meet a specific condition: when the first information comprises the SNR, the specific condition comprises a difference between an SNR of the first port and an SNR of the second port is greater than a specified value, the SNR of the first port is greater than the SNR of the second port, and the specified value is greater than 0; when the first information comprises the uplink path loss, the specific condition comprises a difference between an uplink path loss of the second port and an uplink path loss of the first port is greater than a specified value, the uplink path loss of the second port is greater than the uplink path loss of the first port, and the specified value is greater than 0; when the first information comprises the RSSI, the specific condition comprises a difference between an RSSI of the first port and an RSSI of the second port is greater than a specified value, and the RSSI of the first port is greater than the RSSI of the second port, and the specified value is greater than 0; when the first information comprises the RSRP, the specific condition comprises a difference between RSRP of the first port and RSRP of the second port is greater than a specified value, the RSRP of the first port is greater than the RSRP of the second port, and the specified value is greater than 0; or when the first information comprises the RSCP, the specific condition comprises a difference between RSCP of the first port and RSCP of the second port is greater than a specified value, the RSCP of the first port is greater than the RSCP of the second port, and the specified value is greater than 0.

8. The method according to claim 1, further comprising: determining, by the terminal device, that the first port and the second port do not meet the specific condition; and performing uplink sending through the first port by using third transmit power, and performing uplink sending through the second port by using the third transmit power, the total transmit power of the terminal device is enabled to be the calculated transmit power when uplink sending is performed through the first port and the second port by using the third transmit power; or performing uplink sending through the first port by using the maximum transmit power supported by the first port, and performing uplink sending through the second port by using the third transmit power; or performing uplink sending through the first port by using the third transmit power, and performing uplink sending through the second port by using the maximum transmit power supported by the second port; or performing uplink sending through the first port by using the maximum transmit power supported by the first port, and performing uplink sending through the second port by using the maximum transmit power supported by the second port, when the first information comprises the SNR, the specific condition comprises a difference between an SNR of the first port and an SNR of the second port is greater than a specified value, the SNR of the first port is greater than the SNR of the second port, and the specified value is greater than 0; when the first information comprises the uplink path loss, the specific condition comprises a difference between an uplink path loss of the second port and an uplink path loss of the first port is greater than a specified value, the uplink path loss of the second port is greater than the uplink path loss of the first port, and the specified value is greater than 0; when the first information comprises the RSSI, the specific condition comprises a difference between an RSSI of the first port and an RSSI of the second port is greater than a specified value, and the RSSI of the first port is greater than the RSSI of the second port, and the specified value is greater than 0; when the first information comprises the RSRP, the specific condition comprises a difference between RSRP of the first port and RSRP of the second port is greater than a specified value, the RSRP of the first port is greater than the RSRP of the second port, and the specified value is greater than 0; or when the first information comprises the RSCP, the specific condition comprises a difference between RSCP of the first port and RSCP of the second port is greater than a specified value, the RSCP of the first port is greater than the RSCP of the second port, and the specified value is greater than 0.

9. The method according to claim 5, wherein the third transmit power is PCH−3, where PCH represents the calculated transmit power.

10. A terminal device, comprising: a memory configured to store a computer program or instructions, and a processor connected to the memory and configured to execute the computer program or the instructions to cause the terminal device to: determine, based on first information, to use a first port to perform uplink sending; when maximum transmit power supported by the first port is greater than calculated transmit power, controlling the first port to be used to perform uplink sending, the calculated transmit power being uplink transmit power indicated by a network device; and when the maximum transmit power of the first port is less than the calculated transmit power, dividing uplink sending between the first port and a second port of the terminal device by controlling the first port to perform uplink sending by using the maximum transmit power supported by the first port, and controlling the second port of the terminal device to perform uplink sending by using first transmit power, total transmit power of the terminal device being enabled to be the calculated transmit power, or the first transmit power is maximum transmit power supported by the second port, wherein the first information comprises at least one or more of the following: an SNR, an uplink path loss, an RSSI, RSRP, RSCP, precoding and layer quantity information, and SRS resource indicator information.

11. The terminal device according to claim 10, wherein a plurality of ports is in a one-to-one correspondence with a plurality of antennas, and the plurality of ports comprises the first port and the second port.

12. The terminal device according to claim 10, execution of the computer program or instructions by the processor cause the terminal device to: select, from the plurality of ports of the terminal device, a port with a largest SNR as the first port when the first information comprises the SNR; or select, from the plurality of ports of the terminal device, a port with a smallest uplink path loss as the first port when the first information comprises the uplink path loss; or select, from the plurality of ports of the terminal device, a port with a largest RSSI as the first port when the first information comprises the RSSI; or select, from the plurality of ports of the terminal device, a port with largest RSRP as the first port when the first information comprises the RSRP; or select, from the plurality of ports of the terminal device, a port with largest RSCP as the first port when the first information comprises the RSCP.

13. The terminal device according to claim 10, execution of the computer program or instructions by the processor cause the terminal device to: select, from the plurality of ports of the terminal device, a port with a second largest SNR as the second port when the first information comprises the SNR, and the first port is not a port with a largest SNR in a plurality of uplink ports of the terminal device; or select, from the plurality of ports of the terminal device, a port with a second smallest uplink path loss as the second port when the first information comprises the uplink path loss, and the first port is not a port with a smallest uplink path loss in a plurality of uplink ports of the terminal device; or select, from the plurality of ports of the terminal device, a port with a second largest RSSI as the second port when the first information comprises the RSSI, and the first port is not a port with a largest RSSI in a plurality of uplink ports of the terminal device; or select, from the plurality of ports of the terminal device, a port with second largest RSRP as the second port when the first information comprises the RSRP, and the first port is not a port with largest RSRP in a plurality of uplink ports of the terminal device; or select, from the plurality of ports of the terminal device, a port with second largest RSCP as the second port when the first information comprises the RSCP, and the first port is not a port with largest RSCP in a plurality of uplink ports of the terminal device.

14. The terminal device according to claim 10, execution of the computer program or instructions by the processor causes the terminal device to: when determining, based on the first information, to use the first port and the second port to perform uplink sending, control the first port to be used to perform uplink sending by using third transmit power, and control the second port to be used to perform uplink sending by using the third transmit power, wherein when uplink sending is performed through the first port and the second port by using the third transmit power, the total transmit power of the terminal device is enabled to be the calculated transmit power; or control the first port to be used to perform uplink sending by using the maximum transmit power supported by the first port and control the second port to be used to perform uplink sending by using third transmit power; or control the first port to be used to perform uplink sending by using third transmit power and control the second port to be used to perform uplink sending by using the maximum transmit power supported by the second port; or control the first port to be used to perform uplink sending by using the maximum transmit power supported by the first port and control the second port to be used to perform uplink sending by using the maximum transmit power supported by the second port.

15. The terminal device according to claim 10, wherein the first transmit power is represented by min{Pmax,j, 10 log({circumflex over (P)}CH−{circumflex over (P)}max,i)}, where Pmax,j represents the maximum transmit power of the second port, {circumflex over (P)}CH represents a linear value of the calculated transmit power, the linear value of the calculated transmit power is determined based on the calculated transmit power, {circumflex over (P)}max,i represents a linear value of the maximum transmit power of the first port, the linear value of the maximum transmit power of the first port is determined based on the maximum transmit power of the first port.

16. The terminal device according to claim 10, execution of the computer program or instructions by the processor causing the terminal device to: determine that the first port and the second port meet a specific condition, when the first information comprises the SNR, the specific condition comprises a difference between an SNR of the first port and an SNR of the second port is greater than a specified value, the SNR of the first port is greater than the SNR of the second port, and the specified value is greater than 0; when the first information comprises the uplink path loss, the specific condition comprises a difference between an uplink path loss of the second port and an uplink path loss of the first port is greater than a specified value, the uplink path loss of the second port is greater than the uplink path loss of the first port, and the specified value is greater than 0; when the first information comprises the RSSI, the specific condition comprises a difference between an RSSI of the first port and an RSSI of the second port is greater than a specified value, and the RSSI of the first port is greater than the RSSI of the second port, and the specified value is greater than 0; when the first information comprises the RSRP the specific condition comprises a difference between RSRP of the first port and RSRP of the second port is greater than a specified value, the RSRP of the first port is greater than the RSRP of the second port, and the specified value is greater than 0; or when the first information comprises the RSCP, the specific condition comprises a difference between RSCP of the first port and RSCP of the second port is greater than a specified value, the RSCP of the first port is greater than the RSCP of the second port, and the specified value is greater than 0.

17. The terminal device according to claim 10, execution of the computer program or instructions by the processor cause the terminal device to: determine that the first port and the second port do not meet the specific condition; and control the first port to perform uplink sending by using the third transmit power, and control the second port to perform uplink sending by using the third transmit power, wherein when uplink sending is performed through the first port and the second port by using the third transmit power, the total transmit power of the terminal device is enabled to be the calculated transmit power; or control the first port to be used to perform uplink sending by using the maximum transmit power supported by the first port and control the second port to perform uplink sending by using third transmit power; or control the first port to be used to perform uplink sending by using third transmit power and control the second port to perform uplink sending by using the maximum transmit power supported by the second port; or control the first port to be used to perform uplink sending by using the maximum transmit power supported by the first port and configure the second port to perform uplink sending by using the maximum transmit power supported by the second port, wherein when the first information comprises the SNR, the specific condition comprises a difference between an SNR of the first port and an SNR of the second port is greater than a specified value, the SNR of the first port is greater than the SNR of the second port, and the specified value is greater than 0; when the first information comprises the uplink path loss, the specific condition comprises a difference between an uplink path loss of the second port and an uplink path loss of the first port is greater than a specified value, the uplink path loss of the second port is greater than the uplink path loss of the first port, and the specified value is greater than 0; when the first information comprises the RSSI, the specific condition comprises a difference between an RSSI of the first port and an RSSI of the second port is greater than a specified value, and the RSSI of the first port is greater than the RSSI of the second port, and the specified value is greater than 0; when the first information comprises the RSRP the specific condition comprises a difference between RSRP of the first port and RSRP of the second port is greater than a specified value, the RSRP of the first port is greater than the RSRP of the second port, and the specified value is greater than 0; or when the first information comprises the RSCP, the specific condition comprises a difference between RSCP of the first port and RSCP of the second port is greater than a specified value, the RSCP of the first port is greater than the RSCP of the second port, and the specified value is greater than 0.

18. The terminal device according to claim 14, wherein the third transmit power is PCH−3; and PCH represents the calculated transmit power; and min{a, b} represents that a smallest value of a and b is used.

19. An electronic chip connected to a memory in an electronic device, the memory being configured to store a computer program or instructions; and a processor configured to execute the computer program or the instructions to perform the following method: determine, based on first information, to use a first port to perform uplink sending; when maximum transmit power supported by the first port is greater than calculated transmit power, controlling the first port to perform uplink sending, the calculated transmit power being uplink transmit power indicated by a network device; and when the maximum transmit power of the first port is less than the calculated transmit power, controlling the first port to perform uplink sending by using the maximum transmit power supported by the first port, and controlling a second port of the terminal device to perform uplink sending by using first transmit power, when transmission is performed through the first port by using the maximum power and uplink sending is performed through the second port by using the first transmit power, total transmit power of the terminal device is enabled to be the calculated transmit power, or the first transmit power is maximum transmit power supported by the second port, wherein the first information comprises at least one or more of the following: an SNR, an uplink path loss, an RSSI, RSRP, RSCP, precoding and layer quantity information, and SRS resource indicator information.

20. The electronic chip according to claim 19, wherein a plurality of ports are in a one-to-one correspondence with a plurality of antennas, and the plurality of ports comprise the first port and the second port.